Cleistocactus sepium (ventimigliae) (4441108206).jpg
Taxonomy database of the U.S. National Center for Biotechnology Information
Global Biodiversity Information Facility
United States Department of Agriculture Plants Database
Interim Register of Marine and Nonmarine Genera
A farewell to dated ideas and concepts: molecular phylogenetics and a revised suprageneric classification of the family Cactaceae
A new list of threatened woody species in China under future global change scenarios
Families and genera of Chinese angiosperms: a synoptic classification based on APG III